11. The installation method and steps of Bridge Girder Launcher for Highway and Railway

The bridge girder launcher (launching crane) is the heavy duty hoisting equipment which requires very high safety. A little negligence maybe causes serious accident, therefore, the installation of launching gantry must be directed or installed by professional works, and the steps are following:● surveying positioning● paving rails● assemble two sides main girder symmetrically.● installing front and rear connecting frame● installing front, middle and rear legs● installing lifting trolley and auxiliary trolley● hydraulic system, electrical system, operating platform and plug in power● test run and commissioning.

12. Checking methods after installation of Bridge Girder Launcher for Highway and Railway

We should check geometry size, perpendicularity,degree level and deflection etc. after the structures are installed completely:● Checking connecting parts connect firmly or not. ● Checking the electric connection is correct and limit switch is reliable or not. ● Checking parts of hydraulic system leak oil or not and the lifting is good or not. ● Checking mechanism and structure parts run successfully or not. 9.5、checking lubricating condition of rotating parts. ● Checking the oil level meet the requirements or not ,and then making a trial run .● After all of above checking and adjustments are finished, and making sure every part goes well, and then doing the trial run.